JP4386257B2 - Wheel loader - Google Patents

Description

  The present invention relates to a wheel configured by connecting a front vehicle equipped with a working machine such as a bucket and an arm to a front end of a rear vehicle equipped with various member devices such as an engine and a hydraulic device so as to be swingable in the left-right direction. It belongs to the technical field of loaders.

Generally, in this type of wheel loader, a hydraulic device such as a hydraulic pump or a hydraulic valve is mounted on a rear vehicle, and a liquid tank such as a hydraulic oil tank or a fuel tank is provided for mounting an engine. Such a liquid tank is arranged in front of the rear wheel provided in the rear vehicle, and the rear end surface of the liquid tank is also used as a fender for the rear wheel, while an operator boarding step is provided on the outer surface of the liquid tank. (For example, Patent Document 1).
JP-A-6-73758

  However, in the above-mentioned conventional one, the step protrudes outward from the outer surface of the liquid tank, and is exposed in a naked state in front of the rear wheel. There is a problem that the scattered matter adheres to the step, which causes the step to be slippery and interferes with getting on and off the operator, and there is a problem to be solved by the present invention.

The present invention has been created in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 includes various member devices such as an engine and a hydraulic device. In a wheel loader in which a front vehicle configured to include various member devices such as a bucket and an arm is connected to a front end portion of a rear vehicle so as to be swingable in a left-right direction, at least in a left-right direction of a rear frame constituting the rear vehicle On one side, a liquid tank is provided so that the rear plate becomes the front fender of the rear wheel, and the liquid tank is provided with the lower half of the outer plate in the upper half. against and retracted inwardly, the rear plate formed by setting the magnitude projecting tongue-like outwardly from the outer surface plate upper half portion, the rear plate lower outer half forward rear surface plate the lower outer half sky between the rear wheels is blocked by the Department Part was formed, the space portion, by arranging the step having an outer surface plate located outside the substantially matched outer surface board have half the outer edge position of the rear plate, above the step, A wheel loader characterized in that an outer surface plate inclined surface portion or an outer surface plate step surface portion, which is a surface portion from the lower half portion of the outer surface plate to the upper half portion of the outer surface plate, projects .
A second aspect of the present invention is the wheel loader according to the first aspect, wherein the outer surface of the step is substantially coincident with the outer edge of the rear plate in a front view.
A third aspect of the present invention is the wheel loader according to the first or second aspect, wherein the rear surface plate is configured to protrude outward from the upper half of the outer surface plate.

According to the first aspect of the present invention, although the step is attached so as to protrude outward from the outer surface of the liquid tank, it can be configured not to protrude from the rear plate serving as a fender of the rear wheel. It is possible to prevent the mud that is carried around and scattered forward from adhering to the step.
By setting it as invention of Claim 2, it can be set as the step which is easy to put a foot on.
By setting it as invention of Claim 3, a step becomes what protruded outward rather than the tank outer surface board upper half part, and it can be set as the step which is easy to put a foot on.

  Next, embodiments of the present invention will be described with reference to the drawings. In the figure, reference numeral 1 denotes a wheel loader, and the wheel rotor 1 includes various engine devices (not shown) such as an engine and a hydraulic device and various member devices such as a cabin 3 and a rear wheel 4 that cover a driver's seat 2. The rear vehicle 5 and the front frame 8, the front wheel 9, the bucket 10, the arm 11, and the like that are pivotally supported by the front end portion of the rear frame 6 of the rear vehicle 5 via the connecting portion 7 so as to be swingable in the left-right direction. It is conventional as it is comprised with the front vehicle 12 comprised with a member apparatus.

  A hydraulic oil tank 13, which is an example of a liquid tank, is provided on one side (the right side in the present embodiment) of the rear frame 6 of the rear vehicle 5. The hydraulic oil tank 13 is as follows. It is configured. In other words, the hydraulic oil tank 13 is basically formed in a rectangular shape using a six-face plate of an inner face plate 14, a front face plate 15, an outer face plate 16, a rear face plate 17, and upper and lower face plates 18, 19. The outer surface plate 16 has an inclined surface plate 20 that is cut out in an inclined manner so as to recede toward the outer side (right side). In this embodiment, the inner surface plate 14, the front surface plate 15, and the inclined surface plate 20 are formed by bending with a single plate material, the upper surface plate 18, the outer surface plate 16, and the lower surface plate 19 are formed by bending with a single plate material, and The rear plate 17 is formed by bending a single plate material, and the hydraulic oil tank 13 is configured by combining them. And in this thing, the board | plate material which comprises the inner surface board 14, the front board 15, and the inclined surface board 20 is welded a little inside the front end edge and inner end edge of the board | plate material which comprises the upper surface board 18, the outer surface board 16, and the lower surface board 19. Thus, the front edge and the inner edge of the plate material constituting the upper surface plate 18, the outer surface plate 16, and the lower surface plate 19 protrude in a tongue shape.

  The outer surface plate 16 is formed with an inclined surface portion 16c in the middle portion in the vertical direction so that the interval between the outer surface plate 14 and the inner surface plate 14 is large in the upper half portion 16a and small in the lower half portion 16b (in the left-right direction, not the inclined surface). Of course, it may be formed on a substantially horizontal stepped surface), and the lower half portion 16b has a shape that is immersed in the body. On the other hand, the rear plate 17 basically has a substantially long rectangular shape that is long in the vertical direction when viewed from the front, but the lower outer end side is located at the substantially lower half position of the lower half 16b of the outer plate. A notch 17a is formed so as to correspond to the lower half 16b of the face plate. The rear surface plate 17 is set to a size that protrudes outwardly from the upper surface plate 18, the outer surface plate upper half 16a, and the lower surface plate 19, and is bent at the upper end position of the inclined surface portion 16c in a side view. The upper half portion 17b is looser than the lower half portion 17c, but both are inclined surfaces having a front-rear, rear-high shape, and constitute the front fender surface of the rear wheel 4. Reference numeral 17d denotes a bent portion between the upper and lower half portions 17b and 17c. Reference numeral 17e denotes a scattering prevention piece that extends rearward from the outer edge of the rear plate 17 and prevents mud soil adhering to the fender surface from scattering from side to side.

As is apparent from FIG. 4 , the hydraulic oil tank 13 has a lower half 16b of the outer plate facing the upper half 16a through an inclined surface portion (step surface portion in the case of the above-described step surface) 16c. by has become immersive shape, in front of the outer half portion of the rear plate lower half 17b, space S behind is blocked by the rear plate 17 is formed, in step 21 is disposed in this space S Yes. That is, the step 21 has front and rear surface plates 21a and 21b and an outer surface plate 21c bent in a substantially square shape, and the bent inner ends of the front and rear surface plates 21a and 21b are fixed to the lower half 16b of the outer surface plate. Bolts are fixed to the substantially U-shaped support plate 16d, and the outer surface plate 21c substantially coincides with the outer edge position of the rear surface plate 17 in a front view. Further, it is provided with an auxiliary plate 21d that is positioned inward of the outer surface plate 21c and arranged in parallel with the outer surface plate 21c, and whose front and rear ends are fixed to the front and rear surface plates 21a and 21b. And since step 21 is constituted in this way, the step 21 exists between the rear wheel 4 arranged on the rear side and the lower half 17c of the rear plate serves as a shield, and above the step 21. Further, the outer plate inclined surface portion 16c which is a surface portion extending from the outer plate lower half 16b to the outer plate upper half 16a is projected . In addition, 22 is an oil amount gauge formed in the outer surface plate 21, and 23 is a hydraulic oil inlet.

  In the embodiment of the present invention configured as described above, the rear plate 17 constituting the hydraulic oil tank 13 is provided on the rear frame 6 so as to be the front fender of the rear wheel 4, and the outer plate 16 of the hydraulic oil tank 13 is provided. The step 21 is provided in front of the rear plate 17 so that the lower half 16c of the outer plate is immersed inward while the step 21 is provided so as to protrude outward from the outer plate 16. The rear plate 17 is arranged in the space S which is shielded from the rear wheel 4, and scattered matter such as mud which is carried from the rear wheel 4 and splashes forward adheres to the step 21. As a result, boarding / alighting using step 21 is smooth.

  In addition, in this case, since the outer surface plate (outer surface) 21c of step 21 is in a position that substantially coincides with the outer edge of the rear plate 17 in a front view, the step 21 is more outwardly arranged and easy to use as a scaffold. Become. In addition, since the tank rear surface plate 17 is configured to protrude outward from the outer surface plate upper half 16b, the outer edge of the step 21 can be disposed outward from the hydraulic oil tank 13. , It will have a much better function as a scaffold.

  Of course, the present invention is not limited to the above-described embodiment. In the case where the rear plate of the fuel tank mounted on the rear vehicle is used as the front fender of the rear wheel, the fuel tank Needless to say, this can be implemented in the same way.

It is a side view of a wheel loader. The relationship between a hydraulic-oil tank and a rear frame is shown, Comprising: (A) is a top view, (B) is a side view, (C) is a front view. The hydraulic oil tank is shown, (A) is a plan view and (B) is a side view. The hydraulic oil tank is shown, (A) is a front view and (B) is a bottom view. It is a perspective view of a hydraulic oil tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wheel loader 5 Rear vehicle 6 Rear frame 12 Front vehicle 13 Hydraulic oil tank 16 External plate
Under 16a outer surface plate upper half 16b outer surface plate bottom half 16c outer surface plate inclined surface portion 17 after the face plate 17b rear surface plate upper half 17c after the face plate halves 21 step S space

Claims (3)

A front vehicle configured with various member devices such as a bucket and an arm is connected to a front end portion of a rear vehicle configured with various member devices such as an engine and a hydraulic device so as to be swingable in the left-right direction. In the wheel loader, a liquid tank is provided on at least one side in the left-right direction of the rear frame constituting the rear vehicle so that the rear plate serves as a front fender of the rear wheel, and a step is protruded from the outer plate of the liquid tank. The liquid tank is formed by setting the size of the lower half of the outer plate so that the lower half of the outer plate is immersed inward with respect to the upper half , and the rear plate is protruded outward from the upper half of the outer plate. A space is formed in front of the lower outer half of the rear plate that is shielded from the rear wheel by the lower outer half of the rear plate, and the outer portion of the rear plate substantially coincides with the outer edge position of the rear plate. wherein having an outer surface plate located outside the face plate on the half By disposing step, the above steps, a wheel loader, characterized in that the outer surface plate inclined surface or the outer surface plate step portion overhangs constituting a surface portion extending to the outer surface plate upper half from the lower outer surface plate half.   2. The wheel loader according to claim 1, wherein an outer side surface of the step is substantially coincident with an outer edge of the rear plate in a front view.   3. The wheel loader according to claim 1, wherein the rear plate is configured to protrude outward from the upper half of the outer plate.

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